EP3391725A1 - Rotating auger for a combine harvester - Google Patents

Rotating auger for a combine harvester Download PDF

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Publication number
EP3391725A1
EP3391725A1 EP18165896.4A EP18165896A EP3391725A1 EP 3391725 A1 EP3391725 A1 EP 3391725A1 EP 18165896 A EP18165896 A EP 18165896A EP 3391725 A1 EP3391725 A1 EP 3391725A1
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EP
European Patent Office
Prior art keywords
screw conveyor
auger
housing
screw
runner
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP18165896.4A
Other languages
German (de)
French (fr)
Other versions
EP3391725B1 (en
Inventor
Eric Loutz
Kai-Martin Kunkler
Karl Schewes
Bernd Bastian
Jakob Albrecht
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deere and Co
Original Assignee
Deere and Co
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Filing date
Publication date
Application filed by Deere and Co filed Critical Deere and Co
Publication of EP3391725A1 publication Critical patent/EP3391725A1/en
Application granted granted Critical
Publication of EP3391725B1 publication Critical patent/EP3391725B1/en
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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D41/00—Combines, i.e. harvesters or mowers combined with threshing devices
    • A01D41/12—Details of combines
    • A01D41/1208—Tanks for grain or chaff
    • A01D41/1217—Unloading mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G33/00—Screw or rotary spiral conveyors
    • B65G33/08—Screw or rotary spiral conveyors for fluent solid materials
    • B65G33/14—Screw or rotary spiral conveyors for fluent solid materials comprising a screw or screws enclosed in a tubular housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G33/00—Screw or rotary spiral conveyors
    • B65G33/24—Details
    • B65G33/26—Screws
    • B65G33/265—Screws with a continuous helical surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G33/00—Screw or rotary spiral conveyors
    • B65G33/24—Details
    • B65G33/32—Adaptations of bearings or couplings for supporting and connecting screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G41/00—Supporting frames or bases for conveyors as a whole, e.g. transportable conveyor frames
    • B65G41/001—Supporting frames or bases for conveyors as a whole, e.g. transportable conveyor frames with the conveyor adjustably mounted on the supporting frame or base
    • B65G41/002—Pivotably mounted
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G65/00—Loading or unloading
    • B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
    • B65G65/34—Emptying devices
    • B65G65/40—Devices for emptying otherwise than from the top
    • B65G65/46—Devices for emptying otherwise than from the top using screw conveyors
    • B65G65/466—Devices for emptying otherwise than from the top using screw conveyors arranged to be movable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
    • B65G2201/04—Bulk
    • B65G2201/042—Granular material

Definitions

  • Agricultural combines are used in harvesting grain crops to harvest and thresh crops grown in a field.
  • the threshed crop is then processed by a separator.
  • the grain obtained in the threshing and separating process is cleaned in a cleaning device and deposited in a grain tank, from which it is finally overloaded onto a transport vehicle.
  • a screw conveyor For unloading the grain tank is usually used a screw conveyor, which is pivotable about the vertical axis between a swung-unloading position in which it extends transversely to the forward direction, and a pivoted to the rear transport position.
  • a screw conveyor In order to keep the discharge end of the screw conveyor as high as possible above the ground at a given height of the grain tank bottom (and thus with relatively high-build transport vehicles under the delivery end of the screw conveyor to drive), include conventional screw conveyor (s. EP 1 186 222 A1 ), a first, approximately vertically upwardly extending portion, which is followed by a second, horizontal section.
  • the two sections are interconnected by an angled by about 90 ° transition housing, in which the augers of the two sections by drive elements (propeller shafts) are coupled to one another driven.
  • US 4 037 745 A shows a combine harvester with a Entladeschnecken intensiveer, which consists of a vertical and a horizontal part.
  • a curved baffle is arranged to deflect the grain.
  • the baffle extends parallel to the axis of the horizontal part of the screw conveyor and is curved in the plane orthogonal thereto, ie practically forms a curved inner wall of the transition housing.
  • the EP 2 200 914 B1 shows a return conveyor, which consists of a horizontal and a rising part.
  • the helix of the horizontal screw conveyor is equipped at the end with an area that has a greater pitch than the rest of the helix.
  • the object of the present invention is seen to provide an improved compared to the prior art screw conveyor and thus equipped combine harvester.
  • a screw conveyor assembly for transporting conveyed material in the form of granular material comprises a first screw conveyor having a first housing and a first auger disposed therein, a second auger having a second housing and a second auger disposed therein, and a transition housing to which the first housing and the second housing connect to form a transition angle.
  • the first auger is located upstream of the second auger, i. it is driven in such a way that it conveys its conveyed material into the transition housing, from which it is taken over by the second conveyor screw.
  • a runner is mounted, which is arranged to direct the conveyed from the first auger to the second auger.
  • the runner comprises a front edge with respect to the flow direction of the conveyed material, which extends in a plane extending orthogonally to the axis of rotation of the first conveying screw at least approximately radially to the axis of rotation of the first conveying screw.
  • the skid is therefore arranged as a passive element in the transition housing and directs the conveyed from the first auger to the second auger.
  • an additional conveying element can be fastened to the helix of the first conveying screw immediately adjacent to the transition housing.
  • the conveying element improves the dispensing behavior of the first screw conveyor.
  • a (usually a propeller shaft comprehensive) drive connection for driving coupling of the first and second screw conveyor is provided, which can be shielded by a cover relative to the interior of the transition housing.
  • the runner may extend helically from the leading edge, with a pitch opposite the first screw, to a rear edge.
  • the slope of the skid may be greater than the pitch of the first auger.
  • the rear edge of the runner may extend at least approximately orthogonal to the adjacent inner wall of the concave transition housing.
  • the runner may extend between the inner wall of the transition housing and the cover and / or attached to the second screw conveyor side facing away from the transition housing be.
  • the additional conveyor element can be formed by a ramp-like helix section whose pitch is greater than the pitch of the first auger.
  • the screw conveyor assembly according to the invention can serve on a combine harvester for emptying the grain tank. It would also be possible to use it for filling the grain tank or on any other machine in which grain or other granular material is conveyed, such as for emptying a Abtankwagens or any other conveyor for granular material, in particular in the form of whole or crushed grain as used for example in mobile or stationary equipment for grain processing (eg grain mills or grinders or cleaning equipment for grain).
  • FIG. 1 shows a self-propelled harvester in the form of a combine harvester 10 with a chassis 12, which is supported by driven front wheels 14 and steerable rear wheels 16 on the ground and is moved away from them.
  • the wheels 14, 16 are rotated by means not shown drive means in rotation to the combine 10 z. B. to move over a field to be harvested.
  • directional information such as front and rear, refer to the direction of travel V of the combine harvester 10 in the harvesting operation, which in the FIG. 1 goes to the left.
  • a harvesting header 18 in the form of a cutting unit is detachably connected to harvest harvested crops in the form of crops or other threshable culottes from the field during harvesting operation and feed them up and back by an inclined conveyor assembly 20 to an axial threshing unit 22 ,
  • the im Axialdrehisk 22 by threshing baskets and grates passing through grains and impurities containing mixture passes into a cleaning device 26.
  • cleaned grain is fed by means of a grain screw 28 a grain elevator 30, which conveys it into a grain tank 32.
  • the cleaned grain from the grain tank 32 may be unloaded by a discharge system with a cross auger 34 and a discharge conveyor designed as a screw conveyor assembly 36.
  • the output from the axial threshing 22 crop residues are fed by means of a conveyor drum 40 a straw chopper 42, which crushes them and distributed over the width of the cutting unit 18 across the field.
  • the systems mentioned are driven by means of an internal combustion engine and controlled and controlled by an operator from a driver's cab 38.
  • the illustrated axial threshing unit 22 with one or more axial threshing and separating rotors is only one embodiment and could, for example, be replaced by a tangential threshing mechanism of one or more threshing drums and subsequent straw shaker or separation rotor (s).
  • the auger assembly 36 includes a lower portion 44 extending upwardly from the transverse auger 34 and rigidly supported on the chassis 12.
  • a pivot bearing 54 see. EP 1 186 222 A1
  • the upper part of the screw conveyor assembly 36 is rotatably supported about the vertical axis at the lower part 44.
  • the upper part of the screw conveyor assembly 36 can be pivoted about the vertical axis by an actuator, not shown, with respect to the pivot 54 in order to move the screw conveyor assembly 36 away from the screw conveyor assembly 36
  • the upper portion of the auger assembly 36 includes an at least approximately first vertically extending first auger 46, a transition housing 48, and an at least approximately horizontally extending second auger 50 that extends to an outer discharge end 52 of the auger assembly 36.
  • FIG. 2 shows the first screw conveyor 46, the transition housing 48 and the proximal (the combine harvester 10 adjacent) part of the second screw conveyor 50 obliquely from the front
  • FIG. 3 shows her from the front.
  • the first screw conveyor 46 comprises a hollow, cylindrical (first) housing 62 which abuts the pivot bearing 54 is attached.
  • a first helical auger 56 is placed around a central shaft 58.
  • the shaft 58 may be hollow or solid and is formed from below, ie from a central shaft of a screw conveyor (shown in FIG. 2) disposed in the lower part 44 of the screw conveyor assembly 36 FIG. 1 not shown) which may be integral with or coupled to the first auger 56.
  • Said shaft of the conveyor screw arranged in the lower part 44 of the screw conveyor assembly 36 can in turn be driven by the transverse conveyor screw 34 or a separate drive which can be switched on and off as required (cf. EP 2 245 917 A2 ).
  • an additional conveyor element 60 is mounted at the helix adjacent to the transition housing 48, i. just before the upper end of the first screw conveyor 56.
  • the additional conveying element 60 is designed in the manner of a ramp and is formed by a helical section whose pitch is greater than the pitch of the first conveying screw 56.
  • the transition housing 48 is formed by an arcuately curved wall 64.
  • the wall 64 may, as in the Figures 2 and 3 shown to be integrally molded with the first housing 62, eg as a casting or welding or pressing part, or separated therefrom and coupled thereto by a weld or flange connection.
  • the diameter of the second screw conveyor 50 may be smaller than that of the first screw conveyor 46.
  • the second screw conveyor 50 includes a hollow, cylindrical (second) housing 66, which is connected via a flange 72 with the wall 64 of the transition housing 48. It would also be conceivable to carry out the second housing 66 in one piece with the transition housing 48.
  • a second, helical screw conveyor 68 is placed around a central shaft 70.
  • the shaft 70 may be hollow or solid and shielded by a cover 48 disposed in the drive connection, which is shielded by a cover 74 relative to the interior of the transition housing 48 (and therefore in the Figures 2 and 3 not visible) driven from below the shaft 58 ago.
  • the drive connection may comprise a cardan shaft in a manner known per se.
  • the cover 74 is fixed to opposite regions of the wall 64 of the transition housing 48 by bolts 76 extending radially to the first shaft 58 and the second shaft 70. It would be conceivable, instead of the described drive of the shaft 58, to drive the shaft 58 or the shaft 70 from the auger arranged in the lower part 44 of the screw conveyor assembly 36 by another drive.
  • a runner 78 is provided in the transition housing 48 the occasional problematic first worm conveyor 46 adjacent and spaced from the second screw conveyor 50 is arranged.
  • the runner 78 has a leading edge 80 which is disposed in the plane orthogonal to the axis of rotation of the shaft 58 radially to the axis of rotation of the shaft 58 and approximately parallel to the axis of rotation of the shaft 70.
  • the position and orientation of the leading edge 80 could be different from the position shown and inclined inwardly or outwardly, for example, as viewed in the circumferential direction and / or inclined upwardly or downwardly from the horizontal plane.
  • the runner 78 extends from the wall 64 to the cover 74. From the leading edge 80, the runner 78 extends helically to a trailing edge 82 which is approximately rectilinear and orthogonal to the adjacent wall 64.
  • the position and orientation of the trailing edge 82 could deviate from the position shown and be inclined inwardly or outwardly, for example, viewed more or less in the vertical direction, and / or inclined more or less horizontally up or down.
  • the wall 64 adjacent to another (optional) trailing nose 84 connects, which could alternatively or additionally also be mounted radially inward.
  • the runner 78 forms a screw conveyor 56 and 68 directed opposite, relatively short helix, which has a greater pitch than the screw conveyors 56, 68.
  • the runner 78 is still slightly bent, so that it has a lower slope in a leading area than in the remaining part.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Threshing Machine Elements (AREA)
  • Screw Conveyors (AREA)

Abstract

Ein Schneckenfördererzusammenbau (36) umfasst einen ersten Schneckenförderer (46), einen zweiten Schneckenförderer (50) und ein Übergangsgehäuse (48), an das sich die Schneckenförderer (46, 50) unter Bildung eines Übergangswinkels anschließen. Im Übergangsgehäuse (48) ist eine Kufe (78) und/oder an der dem Übergangsgehäuse (48) unmittelbar benachbarten Wendel der ersten Förderschnecke (56) ein zusätzliches Förderelement (60) angebracht.A screw conveyor assembly (36) includes a first screw conveyor (46), a second screw conveyor (50), and a transition housing (48) to which the screw conveyors (46, 50) join to form a transition angle. In the transition housing (48), a runner (78) and / or on the transition housing (48) immediately adjacent helix of the first screw conveyor (56) an additional conveyor element (60) is mounted.

Description

Die Erfindung betrifft einen Schneckenfördererzusammenbau, der Folgendes umfasst:

  • einen ersten Schneckenförderer mit einem ersten Gehäuse und einer darin angeordneten, ersten Förderschnecke,
  • einen zweiten Schneckenförderer mit einem zweiten Gehäuse und einer darin angeordneten, zweiten Förderschnecke, und
  • einem Übergangsgehäuse, an das sich das erste Gehäuse und das zweite Gehäuse unter Bildung eines Übergangswinkels anschließen,
  • wobei die erste Förderschnecke stromauf der zweiten Förderschnecke angeordnet ist und im Übergangsgehäuse eine Kufe angebracht ist, welche angeordnet ist, das Fördergut von der ersten Förderschnecke zur zweiten Förderschnecke zu leiten, sowie einen damit ausgestatteten Mähdrescher.
The invention relates to a screw conveyor assembly comprising:
  • a first screw conveyor having a first housing and a first conveyor screw arranged therein,
  • a second screw conveyor having a second housing and a second screw conveyor disposed therein, and
  • a transition housing to which the first housing and the second housing connect to form a transition angle,
  • wherein the first auger is arranged upstream of the second auger and in the transition housing a runner is arranged, which is arranged to direct the conveyed from the first auger to the second auger, and a combine harvester equipped therewith.

Stand der TechnikState of the art

Landwirtschaftliche Mähdrescher werden bei der Ernte von Körnerfrüchten eingesetzt, um auf einem Feld angebaute Pflanzen zu ernten und zu dreschen. Das ausgedroschene Erntegut wird anschließend noch durch eine Trenneinrichtung bearbeitet. Das im Dresch- und Trennprozess gewonnene Korn wird in einer Reinigungseinrichtung gereinigt und in einem Korntank abgelegt, aus dem es schließlich auf ein Transportfahrzeug überladen wird.Agricultural combines are used in harvesting grain crops to harvest and thresh crops grown in a field. The threshed crop is then processed by a separator. The grain obtained in the threshing and separating process is cleaned in a cleaning device and deposited in a grain tank, from which it is finally overloaded onto a transport vehicle.

Zum Entladen des Korntanks bedient man sich üblicherweise eines Schneckenförderers, der um die Hochachse zwischen einer ausgeschwenkten Entladeposition, in der er sich quer zur Vorwärtsrichtung erstreckt, und einer nach hinten eingeschwenkten Transportposition schwenkbeweglich ist. Um bei einer gegebenen Höhe des Korntankbodens das Abgabeende des Schneckenförderers möglichst hoch über dem Boden zu halten (und somit auch mit relativ hoch bauenden Transportfahrzeugen unter das Abgabeende des Schneckenförderers fahren zu können), umfassen gebräuchliche Schneckenförderer (s. EP 1 186 222 A1 ) einen ersten, sich näherungsweise vertikal nach oben erstreckenden Abschnitt, an welchen sich ein zweiter, horizontaler Abschnitt anschließt. Die beiden Abschnitte sind durch ein um etwa 90° abgewinkeltes Übergangsgehäuse untereinander verbunden, in welchen die Förderschnecken der beiden Abschnitte durch Antriebselemente (Gelenkwellen) untereinander trieblich gekoppelt werden.For unloading the grain tank is usually used a screw conveyor, which is pivotable about the vertical axis between a swung-unloading position in which it extends transversely to the forward direction, and a pivoted to the rear transport position. In order to keep the discharge end of the screw conveyor as high as possible above the ground at a given height of the grain tank bottom (and thus with relatively high-build transport vehicles under the delivery end of the screw conveyor to drive), include conventional screw conveyor (s. EP 1 186 222 A1 ), a first, approximately vertically upwardly extending portion, which is followed by a second, horizontal section. The two sections are interconnected by an angled by about 90 ° transition housing, in which the augers of the two sections by drive elements (propeller shafts) are coupled to one another driven.

Zwischen der ersten Förderschnecke und der zweiten Förderschnecke entsteht im Übergangsgehäuse ein gewisser räumlicher Abstand, der nicht durch aktiv angetriebene Förderelemente überstrichen wird. Weiterhin erfolgt eine Umlenkung des Erntegutflusses und zudem bei vielen Ausführungsformen eine Verengung des Querschnitts vom ersten zum zweiten Schneckenförderer hin. Diese Umstände können bei gewissen Erntegutbedingungen (z.B. bei relativ feuchtem Korn oder kleinen Kornabmessungen, die ein niedriges Verhältnis zwischen Volumen und somit Masse und Oberfläche bedingen, wie bei Grassamen, und sich daher nicht gut durch das Übergangsgehäuse werfen lassen) zu Übergabeproblemen und zu Verstopfungen führen.Between the first auger and the second auger occurs in the Transitional housing a certain spatial distance, which is not swept by actively driven conveyor elements. Furthermore, there is a deflection of the crop flow and also in many embodiments, a narrowing of the cross section from the first to the second screw conveyor out. These circumstances can lead to handover problems and clogging under certain crop conditions (eg, relatively humid grain or small grain dimensions, which cause a low volume-to-mass ratio, such as grass seed, and therefore can not be thrown well through the transition casing) ,

Gebräuchliche Lösungen für dieses Problem ( AT 365 401 B , GB 1 038 037 A und US 4 093 087 A ) sehen an einer Verbindungswelle zwischen den beiden Förderschnecken angebrachte Förderelemente in Form von Flügeln, Paddeln, o.ä. vor. Sie führen jedoch nicht in allen Fällen zu einem befriedigenden Förderverhalten und verhindern zudem, dass die Verbindungswelle mit ihren Gelenken abgedeckt werden kann. Das geförderte Korn kommt demnach auch in Kontakt mit dem Schmiermittel der Gelenke und kann durch die sich relativ zueinander bewegenden Elemente der Gelenke mechanisch beschädigt werden.Common solutions to this problem ( AT 365 401 B . GB 1 038 037 A and US 4 093 087 A see on a connecting shaft between the two augers mounted conveying elements in the form of wings, paddles, or the like. in front. However, they do not always lead to a satisfactory conveying behavior and also prevent the connecting shaft can be covered with their joints. The conveyed grain thus comes into contact with the lubricant of the joints and can be mechanically damaged by the relatively moving elements of the joints.

Die als gattungsbildend angesehene US 4 037 745 A zeigt einen Mähdrescher mit einem Entladeschneckenförderer, der sich aus einem vertikalen und einem horizontalen Teil zusammensetzt. In einem Übergangsgehäuse zwischen beiden Teilen ist ein gekrümmtes Ablenkblech angeordnet, um das Korn abzulenken. Das Ablenkblech erstreckt sich parallel zur Achse des horizontalen Teils des Schneckenförderers und ist in der dazu orthogonalen Ebene gekrümmt, d.h. bildet praktisch eine kurvenförmige Innenwand des Übergangsgehäuses.The regarded as generic US 4 037 745 A shows a combine harvester with a Entladeschneckenförderer, which consists of a vertical and a horizontal part. In a transition housing between the two parts, a curved baffle is arranged to deflect the grain. The baffle extends parallel to the axis of the horizontal part of the screw conveyor and is curved in the plane orthogonal thereto, ie practically forms a curved inner wall of the transition housing.

Die EP 2 200 914 B1 zeigt einen Überkehrförderer, der sich aus einem horizontalen und einem ansteigenden Teil zusammensetzt. Die Wendel des horizontalen Schneckenförderers ist endseitig mit einem Bereich ausgestattet, der eine größere Steigung als die übrige Wendel aufweist.The EP 2 200 914 B1 shows a return conveyor, which consists of a horizontal and a rising part. The helix of the horizontal screw conveyor is equipped at the end with an area that has a greater pitch than the rest of the helix.

Aufgabetask

Die Aufgabe der vorliegenden Erfindung wird darin gesehen, einen gegenüber dem Stand der Technik verbesserten Schneckenförderer und damit ausgestatteten Mähdrescher bereit zu stellen.The object of the present invention is seen to provide an improved compared to the prior art screw conveyor and thus equipped combine harvester.

Lösungsolution

Diese Aufgabe wird erfindungsgemäß durch die Lehre der Patentansprüche 1 und 10 gelöst, wobei in den weiteren Patentansprüchen Merkmale aufgeführt sind, die die Lösung in vorteilhafter Weise weiterentwickeln.This object is achieved by the teaching of claims 1 and 10, which are listed in the other claims features that further develop the solution in an advantageous manner.

Ein Schneckenfördererzusammenbau zum Transport von Fördergut in Form von granularem Material (wie beispielsweise Korn) umfasst einen ersten Schneckenförderer mit einem ersten Gehäuse und einer darin angeordneten, ersten Förderschnecke, einen zweiten Schneckenförderer mit einem zweiten Gehäuse und einer darin angeordneten, zweiten Förderschnecke, und ein Übergangsgehäuse, an das sich das erste Gehäuse und das zweite Gehäuse unter Bildung eines Übergangswinkels anschließen. Die erste Förderschnecke ist stromauf der zweiten Förderschnecke angeordnet, d.h. sie ist derart antreibbar, dass sie ihr Fördergut in das Übergangsgehäuse fördert, aus dem es von der zweiten Förderschnecke übernommen wird. Im Übergangsgehäuse ist eine Kufe angebracht, welche angeordnet ist, das Fördergut von der ersten Förderschnecke zur zweiten Förderschnecke zu leiten. Die Kufe umfasst eine bezüglich der Flussrichtung des Förderguts vordere Kante, die sich in einer orthogonal zur Drehachse der ersten Förderschnecke verlaufenden Ebene zumindest näherungsweise radial zur Drehachse der ersten Förderschnecke erstreckt.A screw conveyor assembly for transporting conveyed material in the form of granular material (such as grain) comprises a first screw conveyor having a first housing and a first auger disposed therein, a second auger having a second housing and a second auger disposed therein, and a transition housing to which the first housing and the second housing connect to form a transition angle. The first auger is located upstream of the second auger, i. it is driven in such a way that it conveys its conveyed material into the transition housing, from which it is taken over by the second conveyor screw. In the transition housing a runner is mounted, which is arranged to direct the conveyed from the first auger to the second auger. The runner comprises a front edge with respect to the flow direction of the conveyed material, which extends in a plane extending orthogonally to the axis of rotation of the first conveying screw at least approximately radially to the axis of rotation of the first conveying screw.

Die Kufe ist demnach als passives Element im Übergangsgehäuse angeordnet und leitet das Fördergut von der ersten Förderschnecke zur zweiten Förderschnecke.The skid is therefore arranged as a passive element in the transition housing and directs the conveyed from the first auger to the second auger.

Zusätzlich kann an der dem Übergangsgehäuse unmittelbar benachbarten Wendel der ersten Förderschnecke ein zusätzliches Förderelement befestigt sein. Das Förderelement verbessert das Abgabeverhalten des ersten Schneckenförderers.In addition, an additional conveying element can be fastened to the helix of the first conveying screw immediately adjacent to the transition housing. The conveying element improves the dispensing behavior of the first screw conveyor.

Gemäß einer bevorzugten Ausführungsform ist im Übergangsgehäuse eine (üblicherweise eine Gelenkwelle umfassende) Antriebsverbindung zur trieblichen Kopplung der ersten und zweiten Förderschnecke vorgesehen, welche durch eine Abdeckung gegenüber dem Innenraum des Übergangsgehäuses abgeschirmt werden kann.According to a preferred embodiment, in the transition housing a (usually a propeller shaft comprehensive) drive connection for driving coupling of the first and second screw conveyor is provided, which can be shielded by a cover relative to the interior of the transition housing.

Die Kufe kann sich von der vorlaufenden Kante aus wendelförmig, mit einer der ersten Förderschnecke entgegen gesetzten Steigung, zu einer rückwärtigen Kante erstrecken. Die Steigung der Kufe kann größer als die Steigung der ersten Förderschnecke sein. Die rückwärtige Kante der Kufe kann sich zumindest näherungsweise orthogonal zur benachbarten Innenwand des konkav gewölbten Übergangsgehäuses erstrecken. Die Kufe kann sich zwischen der Innenwand des Übergangsgehäuses und der Abdeckung erstrecken und/oder an der dem zweiten Schneckenförderer abgewandten Seite des Übergangsgehäuses angebracht sein.The runner may extend helically from the leading edge, with a pitch opposite the first screw, to a rear edge. The slope of the skid may be greater than the pitch of the first auger. The rear edge of the runner may extend at least approximately orthogonal to the adjacent inner wall of the concave transition housing. The runner may extend between the inner wall of the transition housing and the cover and / or attached to the second screw conveyor side facing away from the transition housing be.

Das zusätzliche Förderelement kann durch einen rampenartigen Wendelabschnitt gebildet werden, dessen Steigung größer als die Steigung der ersten Förderschnecke ist.The additional conveyor element can be formed by a ramp-like helix section whose pitch is greater than the pitch of the first auger.

Der erfindungsgemäße Schneckenfördererzusammenbau kann an einem Mähdrescher zur Entleerung des Korntanks dienen. Es wäre auch denkbar, ihn zur Befüllung des Korntanks einzusetzen oder an einer beliebigen anderen Maschine, in der Korn oder anderes granulares Material gefördert wird, wie zur Entleerung eines Abtankwagens oder an einem beliebigen anderen Förderer für granulares Material insbesondere in Form von ganzem oder zerkleinerten Korn, wie er beispielsweise in mobilen oder stationären Anlagen zur Kornbearbeitung verwendet wird (z.B. Getreidemühlen oder -zerkleinerer oder Reinigungsanlagen für Getreide).The screw conveyor assembly according to the invention can serve on a combine harvester for emptying the grain tank. It would also be possible to use it for filling the grain tank or on any other machine in which grain or other granular material is conveyed, such as for emptying a Abtankwagens or any other conveyor for granular material, in particular in the form of whole or crushed grain as used for example in mobile or stationary equipment for grain processing (eg grain mills or grinders or cleaning equipment for grain).

AusführunasbeispielAusführunasbeispiel

In den Zeichnungen ist ein nachfolgend näher beschriebenes Ausführungsbeispiel der Erfindung dargestellt. Es zeigt:

Fig. 1
eine schematische seitliche Ansicht eines Mähdreschers,
Fig. 2
eine perspektivische seitliche Ansicht eines als Korntankentladeförderer vorgesehenen Schneckenfördererzusammenbaus, und
Fig. 3
eine perspektivische Vorderansicht des Schneckenfördererzusammenbaus.
In the drawings, an embodiment of the invention described in more detail below is shown. It shows:
Fig. 1
a schematic side view of a combine harvester,
Fig. 2
a perspective side view of a designated as Korntankentladeförderer screw conveyor assembly, and
Fig. 3
a front perspective view of the screw conveyor assembly.

Die Figur 1 zeigt eine selbstfahrende Erntemaschine in Form eines Mähdreschers 10 mit einem Fahrgestell 12, das sich über angetriebene vordere Räder 14 und lenkbare rückwärtige Räder 16 auf dem Boden abstützt und von diesen fortbewegt wird. Die Räder 14, 16 werden mittels nicht gezeigter Antriebsmittel in Drehung versetzt, um den Mähdrescher 10 z. B. über ein abzuerntendes Feld zu bewegen. Im Folgenden beziehen sich Richtungsangaben, wie vorn und hinten, auf die Fahrtrichtung V des Mähdreschers 10 im Erntebetrieb, die in der Figur 1 nach links verläuft.The FIG. 1 shows a self-propelled harvester in the form of a combine harvester 10 with a chassis 12, which is supported by driven front wheels 14 and steerable rear wheels 16 on the ground and is moved away from them. The wheels 14, 16 are rotated by means not shown drive means in rotation to the combine 10 z. B. to move over a field to be harvested. In the following, directional information, such as front and rear, refer to the direction of travel V of the combine harvester 10 in the harvesting operation, which in the FIG. 1 goes to the left.

An den vorderen Endbereich des Mähdreschers 10 ist ein Erntevorsatz 18 in Form eines Schneidwerks abnehmbar angeschlossen, um beim Erntebetrieb Erntegut in Form von Getreide oder andere, dreschbare Halmfrüchten von dem Feld zu ernten und es nach oben und hinten durch einen Schrägfördererzusammenbau 20 einem Axialdreschwerk 22 zuzuführen. Das im Axialdreschwerk 22 durch Dreschkörbe und Roste hindurchtretende, Körner und Verunreinigungen enthaltende Gemisch gelangt in eine Reinigungseinrichtung 26. Durch die Reinigungseinrichtung 26 gereinigtes Getreide wird mittels einer Körnerschnecke 28 einem Körnerelevator 30 zugeführt, der es in einen Korntank 32 befördert. Das gereinigte Getreide aus dem Korntank 32 kann durch ein Entladesystem mit einer Querschnecke 34 und einem als Schneckenfördererzusammenbau 36 ausgeführten Entladeförderer entladen werden. Die vom Axialdreschwerk 22 abgegebenen Erntegutreste werden mittels einer Fördertrommel 40 einem Strohhäcksler 42 zugeführt, der sie zerkleinert und über die Breite des Schneidwerks 18 über das Feld verteilt. Die genannten Systeme werden mittels eines Verbrennungsmotors angetrieben und von einem Bediener aus einer Fahrerkabine 38 heraus kontrolliert und gesteuert. Das dargestellte Axialdreschwerk 22 mit einem oder mehreren axialen Dresch- und Trennrotoren ist nur ein Ausführungsbeispiel und könnte beispielsweise durch ein Tangentialdreschwerk einer oder mehreren Dreschtrommeln und nachfolgendem Strohschüttler oder Trennrotor(en) ersetzt werden.At the front end portion of the combine harvester 10, a harvesting header 18 in the form of a cutting unit is detachably connected to harvest harvested crops in the form of crops or other threshable culottes from the field during harvesting operation and feed them up and back by an inclined conveyor assembly 20 to an axial threshing unit 22 , The im Axialdreschwerk 22 by threshing baskets and grates passing through grains and impurities containing mixture passes into a cleaning device 26. By the cleaning device 26 cleaned grain is fed by means of a grain screw 28 a grain elevator 30, which conveys it into a grain tank 32. The cleaned grain from the grain tank 32 may be unloaded by a discharge system with a cross auger 34 and a discharge conveyor designed as a screw conveyor assembly 36. The output from the axial threshing 22 crop residues are fed by means of a conveyor drum 40 a straw chopper 42, which crushes them and distributed over the width of the cutting unit 18 across the field. The systems mentioned are driven by means of an internal combustion engine and controlled and controlled by an operator from a driver's cab 38. The illustrated axial threshing unit 22 with one or more axial threshing and separating rotors is only one embodiment and could, for example, be replaced by a tangential threshing mechanism of one or more threshing drums and subsequent straw shaker or separation rotor (s).

Der Schneckenfördererzusammenbau 36 umfasst einen sich von der Querförderschnecke 34 nach oben erstreckenden, unteren Teil 44, der starr am Fahrgestell 12 abgestützt ist. An einer Drehlagerung 54 (vgl. EP 1 186 222 A1 ) ist der obere Teil des Schneckenfördererzusammenbaus 36 um die Hochachse drehbar am unteren Teil 44 abgestützt. Der obere Teil des Schneckenfördererzusammenbaus 36 kann durch einen nicht gezeigten Aktor gegenüber der Drehlagerung 54 um die Hochachse verschwenkt werden, um den Schneckenfördererzusammenbau 36 von der in Figur 1 gezeigten Transportposition in eine Betriebsposition zu verschwenken, in der er sich vom Fahrgestell 12 quer zur Fahrtrichtung nach außen erstreckt, um ein Überladen von Korn aus dem Korntank 32 auf ein Transportfahrzeug zu ermöglichen.The auger assembly 36 includes a lower portion 44 extending upwardly from the transverse auger 34 and rigidly supported on the chassis 12. At a pivot bearing 54 (see. EP 1 186 222 A1 ), the upper part of the screw conveyor assembly 36 is rotatably supported about the vertical axis at the lower part 44. The upper part of the screw conveyor assembly 36 can be pivoted about the vertical axis by an actuator, not shown, with respect to the pivot 54 in order to move the screw conveyor assembly 36 away from the screw conveyor assembly 36 FIG. 1 shown transport position in an operating position in which it extends from the chassis 12 transversely to the direction of travel to the outside, to allow overcharging of grain from the grain tank 32 to a transport vehicle.

Der obere Teil des Schneckenfördererzusammenbaus 36 umfasst einen sich zumindest näherungsweise vertikal nach oben erstreckenden, ersten Schneckenförderer 46, ein Übergangsgehäuse 48 und einen sich zumindest näherungsweise horizontal erstreckenden, zweiten Schneckenförderer 50, der bis sich zu einem äußeren Abgabeende 52 des Schneckenfördererzusammenbaus 36 erstreckt.The upper portion of the auger assembly 36 includes an at least approximately first vertically extending first auger 46, a transition housing 48, and an at least approximately horizontally extending second auger 50 that extends to an outer discharge end 52 of the auger assembly 36.

Die Figur 2 zeigt den ersten Schneckenförderer 46, das Übergangsgehäuse 48 und den proximalen (dem Mähdrescher 10 benachbarten) Teil des zweiten Schneckenförderers 50 von schräg vorn, und die Figur 3 zeigt sie von vorn.The FIG. 2 shows the first screw conveyor 46, the transition housing 48 and the proximal (the combine harvester 10 adjacent) part of the second screw conveyor 50 obliquely from the front, and FIG. 3 shows her from the front.

Der erste Schneckenförderer 46 umfasst ein hohles, zylindrisches (erstes) Gehäuse 62, das an der Drehlagerung 54 befestigt ist. Im ersten Gehäuse 62 ist eine erste, wendelförmige Förderschnecke 56 um eine mittige Welle 58 gelegt. Die Welle 58 kann hohl oder massiv sein und wird von unten her, d.h. von einer mittigen Welle einer im unteren Teil 44 des Schneckenfördererzusammenbaus 36 angeordneten Förderschnecke (in Figur 1 nicht gezeigt) angetrieben, die mit der ersten Förderschnecke 56 einteilig oder damit gekoppelt sein kann. Die besagte Welle der im unteren Teil 44 des Schneckenfördererzusammenbaus 36 angeordneten Förderschnecke kann ihrerseits durch die Querförderschnecke 34 oder einen separaten Antrieb angetrieben werden, der je nach Bedarf an- und ausgeschaltet werden kann (vgl. EP 2 245 917 A2 ).The first screw conveyor 46 comprises a hollow, cylindrical (first) housing 62 which abuts the pivot bearing 54 is attached. In the first housing 62, a first helical auger 56 is placed around a central shaft 58. The shaft 58 may be hollow or solid and is formed from below, ie from a central shaft of a screw conveyor (shown in FIG. 2) disposed in the lower part 44 of the screw conveyor assembly 36 FIG. 1 not shown) which may be integral with or coupled to the first auger 56. Said shaft of the conveyor screw arranged in the lower part 44 of the screw conveyor assembly 36 can in turn be driven by the transverse conveyor screw 34 or a separate drive which can be switched on and off as required (cf. EP 2 245 917 A2 ).

Um das Abgabeverhalten der ersten Förderschnecke 56 zu verbessern, ist an der dem Übergangsgehäuse 48 benachbarten Wendel, d.h. kurz vor dem oberen Ende der ersten Förderschnecke 56, ein zusätzliches Förderelement 60 angebracht. Das zusätzliche Förderelement 60 ist rampenartig ausgeführt und wird durch einen Wendelabschnitt gebildet, dessen Steigung größer als die Steigung der ersten Förderschnecke 56 ist.In order to improve the dispensing behavior of the first screw conveyor 56, at the helix adjacent to the transition housing 48, i. just before the upper end of the first screw conveyor 56, an additional conveyor element 60 is mounted. The additional conveying element 60 is designed in the manner of a ramp and is formed by a helical section whose pitch is greater than the pitch of the first conveying screw 56.

Das Übergangsgehäuse 48 wird durch eine bogenförmig gekrümmte Wand 64 gebildet. Die Wand 64 kann, wie in den Figuren 2 und 3 gezeigt, mit dem ersten Gehäuse 62 einteilig geformt sein, z.B. als Guss- oder Schweiß- oder Pressteil, oder davon getrennt und durch eine Schweiß- oder Flanschverbindung damit gekoppelt werden. Der Durchmesser des zweiten Schneckenförderers 50 kann kleiner als jener des ersten Schneckenförderers 46 sein.The transition housing 48 is formed by an arcuately curved wall 64. The wall 64 may, as in the Figures 2 and 3 shown to be integrally molded with the first housing 62, eg as a casting or welding or pressing part, or separated therefrom and coupled thereto by a weld or flange connection. The diameter of the second screw conveyor 50 may be smaller than that of the first screw conveyor 46.

Der zweite Schneckenförderer 50 umfasst ein hohles, zylindrisches (zweites) Gehäuse 66, das über eine Flanschverbindung 72 mit der Wand 64 des Übergangsgehäuses 48 verbunden ist. Es wäre auch denkbar, das zweite Gehäuse 66 einteilig mit dem Übergangsgehäuse 48 auszuführen. Im zweiten Gehäuse 66 ist eine zweite, wendelförmige Förderschnecke 68 um eine mittige Welle 70 gelegt. Die Welle 70 kann hohl oder massiv sein und über eine im Übergangsgehäuse 48 angeordnete Antriebsverbindung, die durch eine Abdeckung 74 gegenüber dem Innenraum des Übergangsgehäuses 48 abgeschirmt wird (und daher in den Figuren 2 und 3 nicht zu sehen ist) von unten der Welle 58 her angetrieben. Die Antriebsverbindung kann in an sich bekannter Weise eine Gelenkwelle umfassen. Die Abdeckung 74 ist durch Bolzen 76, die sich radial zur ersten Welle 58 und zur zweiten Welle 70 erstrecken, an gegenüberliegenden Bereichen der Wand 64 des Übergangsgehäuses 48 festgelegt. Es wäre denkbar, anstelle des beschriebenen Antriebs der Welle 58 von der im unteren Teil 44 des Schneckenfördererzusammenbaus 36 angeordneten Förderschnecke her die Welle 58 oder die Welle 70 durch einen anderen Antrieb anzutreiben.The second screw conveyor 50 includes a hollow, cylindrical (second) housing 66, which is connected via a flange 72 with the wall 64 of the transition housing 48. It would also be conceivable to carry out the second housing 66 in one piece with the transition housing 48. In the second housing 66, a second, helical screw conveyor 68 is placed around a central shaft 70. The shaft 70 may be hollow or solid and shielded by a cover 48 disposed in the drive connection, which is shielded by a cover 74 relative to the interior of the transition housing 48 (and therefore in the Figures 2 and 3 not visible) driven from below the shaft 58 ago. The drive connection may comprise a cardan shaft in a manner known per se. The cover 74 is fixed to opposite regions of the wall 64 of the transition housing 48 by bolts 76 extending radially to the first shaft 58 and the second shaft 70. It would be conceivable, instead of the described drive of the shaft 58, to drive the shaft 58 or the shaft 70 from the auger arranged in the lower part 44 of the screw conveyor assembly 36 by another drive.

Um den insbesondere bei feuchtem oder feinkörnigem Fördermaterial gelegentlich problematischen Übergang vom ersten Schneckenförderer 46 zum zweiten Schneckenförderer 50 durch das nicht mit aktiv angetriebenen Förderelementen ausgestattete Übergangsgehäuse 48 zu verbessern, ist alternativ oder zusätzlich zum zusätzlichen Förderelement 60 eine Kufe 78 vorgesehen, die im Übergangsgehäuse 48 dem ersten Schneckenförderer 46 benachbart und vom zweiten Schneckenförderer 50 beabstandet angeordnet ist. Die Kufe 78 hat eine vorlaufende Kante 80, die in der orthogonal zur Drehachse der Welle 58 liegenden Ebene radial zur Drehachse der Welle 58 und etwa parallel zur Drehachse der Welle 70 angeordnet ist. Die Lage und Orientierung der vorlaufenden Kante 80 könnte von der gezeigten Position abweichen und beispielsweise in Umfangsrichtung betrachtet nach innen oder außen geneigt sein und/oder aus der horizontalen Ebene nach oben oder unten geneigt sein. Die Kufe 78 erstreckt sich von der Wand 64 bis zur Abdeckung 74. Von der vorlaufenden Kante 80 aus erstreckt sich die Kufe 78 wendelförmig zu einer nachlaufenden Kante 82, die etwa geradlinig und orthogonal zur benachbarten Wand 64 verläuft. Die Lage und Orientierung der nachlaufenden Kante 82 könnte von der gezeigten Position abweichen und beispielsweise in vertikaler Richtung betrachtet mehr oder weniger als zeichnerisch dargestellt nach innen oder außen geneigt sein und/oder in horizontaler Richtung mehr oder weniger weit nach oben oder unten geneigt sein. Am radial äußeren Ende der Kante 82 schließt sich der Wand 64 benachbart noch eine (optionale) nachlaufende Nase 84 an, die alternativ oder zusätzlich auch radial innen angebracht sein könnte. Die Kufe 78 bildet eine den Förderschnecken 56 und 68 entgegen gerichtete, relativ kurze Wendel, die eine größere Steigung als die Förderschnecken 56, 68 aufweist. An der vorderen Kante 80 ist die Kufe 78 noch geringfügig abgeknickt, sodass sie in einem vorlaufenden Bereich eine geringere Steigung als im übrigen Teil aufweist.In order to improve the occasionally problematic transition from the first screw conveyor 46 to the second screw conveyor 50 by the non-actively driven conveyor elements equipped transition housing 48, alternatively or in addition to the additional conveyor element 60, a runner 78 is provided in the transition housing 48 the occasional problematic first worm conveyor 46 adjacent and spaced from the second screw conveyor 50 is arranged. The runner 78 has a leading edge 80 which is disposed in the plane orthogonal to the axis of rotation of the shaft 58 radially to the axis of rotation of the shaft 58 and approximately parallel to the axis of rotation of the shaft 70. The position and orientation of the leading edge 80 could be different from the position shown and inclined inwardly or outwardly, for example, as viewed in the circumferential direction and / or inclined upwardly or downwardly from the horizontal plane. The runner 78 extends from the wall 64 to the cover 74. From the leading edge 80, the runner 78 extends helically to a trailing edge 82 which is approximately rectilinear and orthogonal to the adjacent wall 64. The position and orientation of the trailing edge 82 could deviate from the position shown and be inclined inwardly or outwardly, for example, viewed more or less in the vertical direction, and / or inclined more or less horizontally up or down. At the radially outer end of the edge 82, the wall 64 adjacent to another (optional) trailing nose 84 connects, which could alternatively or additionally also be mounted radially inward. The runner 78 forms a screw conveyor 56 and 68 directed opposite, relatively short helix, which has a greater pitch than the screw conveyors 56, 68. At the front edge 80, the runner 78 is still slightly bent, so that it has a lower slope in a leading area than in the remaining part.

Claims (10)

Schneckenfördererzusammenbau (36), umfassend: einen ersten Schneckenförderer (46) mit einem ersten Gehäuse (62) und einer darin angeordneten, ersten Förderschnecke (56), einen zweiten Schneckenförderer (50) mit einem zweiten Gehäuse (66) und einer darin angeordneten, zweiten Förderschnecke (68), und einem Übergangsgehäuse (48), an das sich das erste Gehäuse (62) und das zweite Gehäuse (66) unter Bildung eines Übergangswinkels anschließen, wobei die erste Förderschnecke (56) stromauf der zweiten Förderschnecke (68) angeordnet ist und im Übergangsgehäuse (48) eine Kufe (78) angebracht ist, welche angeordnet ist, das Fördergut von der ersten Förderschnecke (56) zur zweiten Förderschnecke (68) zu leiten, dadurch gekennzeichnet, dass die Kufe (78) eine bezüglich der Flussrichtung des Förderguts vordere Kante (80) umfasst, die sich in einer orthogonal zur Drehachse der ersten Förderschnecke (56) verlaufenden Ebene zumindest näherungsweise radial zur Drehachse der ersten Förderschnecke (56) erstreckt. A screw conveyor assembly (36) comprising: a first screw conveyor (46) having a first housing (62) and a first screw conveyor (56) disposed therein; a second screw conveyor (50) having a second housing (66) and a second auger (68) disposed therein; a transition housing (48) to which the first housing (62) and the second housing (66) connect to form a transition angle, wherein the first auger (56) is arranged upstream of the second auger (68) and in the transition housing (48) a runner (78) is mounted, which is arranged, the conveyed from the first auger (56) to the second auger (68) conduct, characterized in that the runner (78) comprises a front edge (80) with respect to the direction of flow of the conveyed material which extends at least approximately radially to the axis of rotation of the first conveyor screw (56) in a plane orthogonal to the axis of rotation of the first conveyor screw (56). Schneckenfördererzusammenbau (36) nach Anspruch 1, wobei an der dem Übergangsgehäuse (48) unmittelbar benachbarten Wendel der ersten Förderschnecke (56) ein zusätzliches Förderelement (60) angebracht ist.A screw conveyor assembly (36) according to claim 1, wherein an additional conveying element (60) is mounted on the helix of the first conveying screw (56) immediately adjacent the transition housing (48). Schneckenfördererzusammenbau (36) nach Anspruch 1 oder 2, mit einer im Übergangsgehäuse (48) angeordneten Antriebsverbindung zur trieblichen Kopplung der ersten und zweiten Förderschnecke (56, 68) und einer die Antriebsverbindung gegenüber dem Innenraum des Übergangsgehäuses (48) abschirmenden Abdeckung (74).A screw conveyor assembly (36) as claimed in claim 1 or 2, including a drive connection in the transition housing (48) for drivingly coupling the first and second augers (56, 68) and a cover (74) shielding the drive connection from the interior of the transition housing (48). Schneckenfördererzusammenbau (36) nach einem der Ansprüche 1 bis 3, wobei die Kufe (78) sich von einer vorlaufenden Kante (80) aus wendelförmig, mit einer der ersten Förderschnecke (56) entgegen gesetzten Steigung, zu einer rückwärtigen Kante (82) erstreckt.A screw conveyor assembly (36) according to any one of claims 1 to 3, wherein the runner (78) extends helically from a leading edge (80) to a rearward edge (82) with a pitch opposite the first auger (56). Schneckenfördererzusammenbau (36) nach Anspruch 4, wobei die Steigung der Kufe (78) größer als die Steigung der ersten Förderschnecke (56) ist.The auger assembly (36) of claim 4, wherein the pitch of the skid (78) is greater than the pitch of the first auger (56). Schneckenfördererzusammenbau (36) nach einem der Ansprüche 4 oder 5, wobei die rückwärtige Kante (82) der Kufe (78) sich zumindest näherungsweise orthogonal zur benachbarten Innenwand des konkav gewölbten Übergangsgehäuses (48) erstreckt.A screw conveyor assembly (36) according to any one of claims 4 or 5, wherein the Rear edge (82) of the runner (78) extends at least approximately orthogonal to the adjacent inner wall of the concave transition housing (48). Schneckenfördererzusammenbau (36) nach einem der Ansprüche 1 bis 6, wenn rückbezogen auf Anspruch 3, wobei die Kufe (78) sich zwischen einer Wand (64) des Übergangsgehäuses (48) und der Abdeckung (74) erstreckt.A screw conveyor assembly (36) according to any one of claims 1 to 6 when dependent on claim 3, wherein the runner (78) extends between a wall (64) of the transition housing (48) and the cover (74). Schneckenfördererzusammenbau (36) nach einem der vorhergehenden Ansprüche, wobei die Kufe (78) an der dem zweiten Schneckenförderer (50) abgewandten Seite des Übergangsgehäuses (48) angebracht ist.A screw conveyor assembly (36) according to any one of the preceding claims, wherein the runner (78) is mounted on the side of the transition housing (48) remote from the second screw conveyor (50). Schneckenfördererzusammenbau (36) nach einem der Ansprüche 2 bis 8, wobei das zusätzliche Förderelement (60) durch einen Wendelabschnitt gebildet wird, dessen Steigung größer als die Steigung der ersten Förderschnecke (56) ist.A screw conveyor assembly (36) according to any one of claims 2 to 8, wherein the additional conveyor element (60) is formed by a helical section whose pitch is greater than the pitch of the first conveyor screw (56). Mähdrescher (10) mit einem Korntank (32) und einem zur Entleerung des Korntanks (32) angeordneten Schneckenfördererzusammenbau (36) nach einem der vorhergehenden Ansprüche.Combine harvester (10) having a grain tank (32) and a screw conveyor assembly (36) arranged to empty the grain tank (32) according to one of the preceding claims.
EP18165896.4A 2017-04-19 2018-04-05 Rotating auger for a combine harvester Active EP3391725B1 (en)

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Also Published As

Publication number Publication date
EP3391725B1 (en) 2020-01-22
US10701860B2 (en) 2020-07-07
DE102017003738A1 (en) 2018-10-25
US20180303032A1 (en) 2018-10-25

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